Live tape
Top 8, mentions 7d6,968META1,793 mentions▲ +0.06GOOGL1,433 mentions▲ +0.03NVDA885 mentions▲ +0.09TSLA655 mentions▲ +0.05MSFT580 mentions▲ +0.06SPY571 mentions▲ +0.03AMZN554 mentions▲ +0.04AAPL497 mentions▲ +0.07

Equity · Basic Materials

WLK

NYSE

Westlake Corporation

$77.65 +0.77% vs prior close Finazon · prior-day close, indicative (IEX-derived, not the official close) · Jul 17, 2026
Price · Chart
Our own end-of-day closes 11 sessions
$78 $74 2 Jul 17 Jul

The line runs $74.78 on 2 July through $77.65 on 17 July, on a scale from $74 to $78. Days the market did not trade hold the previous close, flat.

Track this symbol on TradingView

The chart above plots the price of WLK over the range selected — one day to the full history — drawn by TradingView from their own data. Our own licensed end-of-day series holds 11 sessions over that window: $74.78 on 2 July 2026 through $77.65 on 17 July 2026.

Market cap $9.9B
52-week range $56 – $123.44
Avg volume 335.1K

Finazon · prior-day close, indicative (IEX-derived, not the official close) · valuation computed from SEC EDGAR filings · as of Jul 17, 2026

WLK insider trades

SEC Form 4

WLK has no Form 4 filing in the last 90 days, so there is no summary for that window. The most recent filings we hold are below, the newest dated 10 December 2025.

Compensation mechanics Share grants, option exercises, tax withholding and transfers. They reach the same Form 4 as a trade, but they are not the insider buying or selling on the open market, so no purchase or sale value applies to them.

Date Insider Type Shares Value
10 Dec 2025 CREGG ROGER A Option exercise 1,339
02 Oct 2025 Szwejbka Scott Thomas SVP, HIP Segment Head Tax withheld 3,842 $295K
01 Oct 2025 Szwejbka Scott Thomas SVP, HIP Segment Head Option exercise 10,840
28 Aug 2025 Chao James Senior Chairman Gift 15,140

WLK reported financials

SEC EDGAR XBRL

WLK reported revenue of $11.2B for the fiscal year ended 31 Dec 2025. Net income over the same period was −$1.5B.

Figure Reported Period
Revenue $11.2B 31 Dec 2025 fiscal year
Net income −$1.5B 31 Dec 2025 fiscal year
Diluted EPS −$11.70 31 Dec 2025 fiscal year
Total assets $19.4B 30 Jun 2026 at period end
Total equity $8.7B 30 Jun 2026 at period end

Source: SEC EDGAR XBRL company facts · latest period ended 30 Jun 2026

WLK earnings

SEC EDGAR
Date Period EPS Revenue
30 Jun 2026 Q2 2026 $2.01 $3.27B
31 Mar 2026 Q1 2026 $-1.31 $2.65B
31 Dec 2025 FY 2025 $-11.70 $11.17B
30 Sep 2025 Q3 2025 $-6.06 $2.84B
30 Jun 2025 Q2 2025 $-1.11 $2.95B
31 Mar 2025 Q1 2025 $-0.31 $2.85B
31 Dec 2024 FY 2024 $4.64 $12.14B
30 Sep 2024 Q3 2024 $0.83 $3.12B

Next report no date announced in SEC filings yet

Reported figures & scheduled dates · SEC EDGAR filings

WLK institutional holders

SEC Form 13F

11 of the 45 institutional funds we track reported a WLK position for the quarter ended 30 Jun 2026 — a combined $306.9M; the latest of those filings landed 02 Sep 2026.

Fund Action Shares Value
AQR Capital Management Added +503.9% shares 1,570,453 $114.6M
Citadel Advisors Added +47.4% shares 1,054,868 $77.0M
Balyasny Asset Management Added +69.3% shares 625,859 $45.7M
Millennium Management Added +330.7% shares 366,074 $26.7M
D. E. Shaw & Co. Held (±25%) −14.0% shares 200,534 $14.6M
Marshall Wace New position 111,574 $8.1M
Tudor Investment Corp New position 110,710 $8.1M
Point72 Asset Management New position 89,731 $6.6M
Two Sigma Investments New position 45,357 $3.3M
Man Group Trimmed −84.0% shares 25,705 $1.9M

Showing the 10 largest of 11 reported positions. The figures above count all of them.

Source: SEC EDGAR 13F filings

WLK fails-to-deliver

SEC CNS data

On 26 Aug 2026, 100 shares of WLK failed to deliver (about $7K) — the latest of 2 consecutive trading days with recorded fails.

Settlement date Shares failed Notional % of shares out
26 Aug 2026 100 $7K <0.001%
25 Aug 2026 57,174 $4.4M 0.045%

Source: SEC fails-to-deliver (CNS) data

Congressional trades in WLK

STOCK Act disclosures

The most recent congressional trade disclosed in WLK is a sale by Susie Lee (house, NV), dated 10 Jun 2021.

Date Member Type Amount
10 Jun 2021 filed 13 Jul 2021 Susie Lee house · Democrat–NV Sale $1K–$15K
10 Dec 2020 filed 11 Jan 2021 Susie Lee house · Democrat–NV Purchase $1K–$15K

Source: U.S. House of Representatives financial disclosures